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PM / OPP: handle allocation of device_opp in a separate routine 

Get the 'device_opp' allocation code into a separate routine to keep only the
necessary part in dev_pm_opp_add_dynamic().

Also do s/sizeof(struct device_opp)/sizeof(*dev_opp) and remove the print
message on kzalloc() failure as checkpatch warns for that.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Viresh Kumar 2014-12-10 09:45:34 +05:30 committed by Rafael J. Wysocki
parent 29df0ee1b1
commit 07cce74a7b
1 changed files with 22 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
drivers/base/power/opp.c
View File

@ -386,6 +386,27 @@ struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
} }
EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_floor); EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_floor);
static struct device_opp *add_device_opp(struct device *dev)
{
struct device_opp *dev_opp;
/*
* Allocate a new device OPP table. In the infrequent case where a new
* device is needed to be added, we pay this penalty.
*/
dev_opp = kzalloc(sizeof(*dev_opp), GFP_KERNEL);
if (!dev_opp)
return NULL;
dev_opp->dev = dev;
srcu_init_notifier_head(&dev_opp->srcu_head);
INIT_LIST_HEAD(&dev_opp->opp_list);
/* Secure the device list modification */
list_add_rcu(&dev_opp->node, &dev_opp_list);
return dev_opp;
}
static int dev_pm_opp_add_dynamic(struct device *dev, unsigned long freq, static int dev_pm_opp_add_dynamic(struct device *dev, unsigned long freq,
unsigned long u_volt, bool dynamic) unsigned long u_volt, bool dynamic)
{ {
@ -412,27 +433,13 @@ static int dev_pm_opp_add_dynamic(struct device *dev, unsigned long freq,
/* Check for existing list for 'dev' */ /* Check for existing list for 'dev' */
dev_opp = find_device_opp(dev); dev_opp = find_device_opp(dev);
if (IS_ERR(dev_opp)) { if (IS_ERR(dev_opp)) {
/* dev_opp = add_device_opp(dev);
* Allocate a new device OPP table. In the infrequent case
* where a new device is needed to be added, we pay this
* penalty.
*/
dev_opp = kzalloc(sizeof(struct device_opp), GFP_KERNEL);
if (!dev_opp) { if (!dev_opp) {
mutex_unlock(&dev_opp_list_lock); mutex_unlock(&dev_opp_list_lock);
kfree(new_opp); kfree(new_opp);
dev_warn(dev,
"%s: Unable to create device OPP structure\n",
__func__);
return -ENOMEM; return -ENOMEM;
} }
dev_opp->dev = dev;
srcu_init_notifier_head(&dev_opp->srcu_head);
INIT_LIST_HEAD(&dev_opp->opp_list);
/* Secure the device list modification */
list_add_rcu(&dev_opp->node, &dev_opp_list);
head = &dev_opp->opp_list; head = &dev_opp->opp_list;
goto list_add; goto list_add;
} }